A benign Becker muscular dystrophy (BMD) patient with a marked decreas
e in dystrophin exhibited remarkable expression of dystrophin-related
protein (DRP) on most of the muscle cell membrane. A phenotypic Duchen
ne muscular dystrophy patient with a truncated form of dystrophin exhi
bited no DRP expression on the muscle cell membrane except for the neu
romuscular junction. Increased DRP expression might compensate for a l
ack of dystrophin in some BMD patients.